Fourstroke 01

Every second matters

The rulebook has been thrown away: re-imagine the ultimate XC race bike and join the revolution - where up meets down.

Born to surpass the demands of the world’s top XC athletes, the Fourstroke 01 delivers the ultimate performance on the most demanding courses.

A purpose-designed race machine, every element of its structure is crafted to optimize speed, save seconds, and keep riders ahead of the pack.

Our all-new Race Application Dropper Seatpost (RAD) ensures that its fast and smooth adjustments maximize power and control whatever the gradient, allowing you to ride more dynamically. The revised Big Wheel Concept Race (BWC) geometry has evolved to embody the progressive riding style our athletes display on technical World Cup tracks.

The Fourstroke 01 shifts the paradigm. Reel in the competition on the climbs, drop them on the descents. Every second matters.

The ultimate Cross Country race machine

The Fourstroke 01 is born to shave off seconds up and down the toughest XC race courses. Our holistic approach to look at the bike as an entire system allowed us to develop our fastest and most intuitive race bike ever.

Big Wheel Concept Race Geometry, a new approach

The BWC Race (Big Wheel Concept) geometry supports a progressive XC riding style through the wide-open head angle, long front-end, short chainstays and an innovative stem design.

Built for efficiency

Accept no compromises with a lightweight chassis designed for class-leading stiffness and lightning-fast sprints. The refined APS (Advanced Pivot System) suspension deliver pedaling efficiency, traction and control on every race course.

Fourstroke 01 Hotspots

RAD seatpost

Completely integrated with a low system weight of 345g – the most radical XC dropper seatpost.

Lightweight Premium Carbon

A full-carbon system with a new super light carbon upper link.

The Fourstroke 01 features a Premium Carbon upper link that saves 40g compared to Aluminum, and provides a stiffer connection between the front and rear triangle.

BWC Race Geometry

A radical approach to XC geometry, tailored to a fast and progressive riding style.

Integrated fork stopper

Smart engineering for optimized cable routing and frame protection.

The integrated fork stopper protects the frame from impacts and allows a straight downtube design for improved stiffness and weight.

APS Suspension

Technology focus

The functionality of a dropper post and the visual appeal of an integrated design combined in a featherweight solution – that’s RAD. With an overall weight of only 345g, RAD shaves off more than 100g over a conventional dropper post design while delivering maximum descending and uphill performance. Read more

Change your attitude with BWC Race and charge on technical sections with all the confidence of the most progressive XC geometry to date. BWC Race delivers control and stability to master steep, loose terrain and still delivers all the quick acceleration and endless traction for fast-paced uphill action. Read more

The integrated cables are routed from end to end for quick and convenient brake and drivetrain maintenance. Clever integrated protection elements like the integrated chainstay protector and mud flap, keep your frame safe and sharp-looking. Read more

Every gram counts

Light and Efficient

The Fourstroke 01 has been revised from the ground up with incredible attention to detail. Fewer parts extend reliability and durability of the system and improve overall weight, that allows the addition of a dropper seatpost and still achieve an extremely competitive system weight.

The all-new carbon upper link provides the stiffest connection between front triangle and swingarm for uncompromised suspension performance and weight savings of 40g

The optimized suspension hardware reduces the number of parts for improved reliability and weight savings of 51g compared to the previous Fourstroke 01

The super-light thru-axle developed in the Impec Lab saves additional 9g

Frame weight with shock: 2180g

Overall system weight including RAD seatpost and hardware: 2525g

Complete bike weight: 10kg

Built for efficiency

Put the hammer down!

The Fourstroke 01 is designed for unparalleled power delivery with a redesigned chassis that excels in torsional and bottom bracket stiffness. A true performance leap that boosts one of the most successful XC race bikes on the scene to a new level.